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迄今为止,有关Ce Ⅳ络合物的化学反应研究得不多。我们首次报道了当(HPY)_2CeCl_6和取代环戊二烯碱金属盐反应时,Ce Ⅳ完全被还原成Ce Ⅲ。为了进一步了解这类反应的特点,本文研究了另一个Ce Ⅳ络合物[HPEt_3]_2CeCl_6和C_5Me_5Li的反应,发现从这一体系中也只能分离到Ce Ⅲ的阴离子型络合物Li[(C_5Me_5)_2CeCl_2](THF)_2。比较了本反应和(HPY)_2CeCl_6与C_5Me_5Li的反应结果观察到,(HL)_2CeCl_6中L的性质对这类反应的产物有较大的影响。
To date, there have been few studies on the chemical reaction of Ce Ⅳ complexes. We first reported that when (HPY) _2CeCl_6 and substituted cyclopentadienyl alkali metal salt reaction, Ce Ⅳ completely reduced to Ce Ⅲ. In order to further understand the characteristics of this kind of reaction, we studied the reaction of another Ce Ⅳ complex [HPEt_3] _2CeCl_6 and C_5Me_5Li and found that only the anion complex of Ce Ⅲ could be separated from this system [ C_5Me_5) _2CeCl_2] (THF) _2. The reaction results between (HPY) _2CeCl_6 and C_5Me_5Li were compared. It was observed that the nature of L in (HL) _2CeCl_6 had a great influence on the products of this kind of reaction.